MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -I2C is a two wire protocol and SPI is a four wire protocol. I2C supports clock stretching and SPI does not have clock stretching. I2C is slower than SPI. I2C has extra overhead start and stop bits and SPI does not have any start and stop bits.

Detailed explanation-2: -The MSSP’s I2C module provides a synchronous serial interface between the microcontroller and other I2C-compatible devices using a two-wire bus network. The two signals connections, Serial Clock (SCL) and Serial Data (SDA), are bidirectional open-drain lines, each requiring pull-up resistors to the supply voltage.

Detailed explanation-3: -A Serial Peripheral Interface (SPI) is used for short-distance communication, particularly in embedded systems. A more common serial communication protocol is I2C, which facilitates communication between electronic components, whether the components are on the same PCB or connected with a cable.

Detailed explanation-4: -Below are the options required to set for operating the MSSP module in SPI mode. The MSSP module contains two registers, transmit/receive shift register (SSPSR) and a buffer register (SSPBUF).

Detailed explanation-5: -You can normally mix I2C and SPI on the same pins with no problems. You can normally mix I2C and SPI on the same pins.